Propulsion trailer



FIG. 1 is a side elevation view thereof showing the left side;

FIG. 2 is a side elevation view thereof showing the right side;

FIG. 3 is a front elevation view thereof showing the anterior side;

FIG. 4 is a rear elevation view thereof showing the posterior side;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof.

FIG. 7 is a perspective view of the trailer showing the right frontal view of our new design; and,

FIG. 8 is a perspective view of the trailer showing the left posterior view of our new design.

The broken lines in the drawings depict probable environment only and form no part of the claimed design. 

The ornamental design for a propulsion trailer, as shown and described. 